The fourth generation Ford Focus, also known as the Focus Mk IV, is a small family car which has been produced by Ford from 2018. It was revealed in April 2018 to replace the third-generation Focus. As in the previous generation, the model is available with saloon, hatchback and estate body styles. This generation marked the demise of the Focus line-up in many regions, including North America, South America, and Southeast Asia, effectively limiting its market reach to just Europe, China, Taiwan, Australasia, and other minor markets.

The C-segment is the 3rd category of the European segments for passenger cars and is described as "medium cars". It is equivalent to the Euro NCAP "small family car" size class, and the compact car category in the United States.